With such a setup I think you'd barely see the 300W DC mark, so even a 350-400W PSU could work flawlessly. Unless you do something intensive like mining or folding, I would expect a maybe 180W-200W DC real power consumption under normal usage (load).

I won't use an old Vertex 3 as system drive, but it's not the question. With reference to your question, I won't use even a Seasonic PSU, unless your source is a seller like Amazon, I mean with a first class customer service (as those PSUs have suffered of too much squealing and RMA, recently).

Any ideas of any slightly high wattage fanless power supply ? I am a bit concerned around future proofing since I could perhaps in the future get a more thirsty card like the 7950 plus stack the 2 SAS controllers with more disks.

With such a setup I think you'd barely see the 300W DC mark, so even a 350-400W PSU could work flawlessly. Unless you do something intensive like mining or folding, I would expect a maybe 180W-200W DC real power consumption under normal usage (load).

I won't use an old Vertex 3 as system drive, but it's not the question. With reference to your question, I won't use even a Seasonic PSU, unless your source is a seller like Amazon, I mean with a first class customer service (as those PSUs have suffered of too much squealing and RMA, recently).

Happy holidays!

Thanks for the response. BTW I am reusing the Vertex from my current build not ideal but haven't got the funds to buy anything new right now.

Just remember coil noise and whining is not an exclusive thing of seasonic, it can happen with any PSU, some believe (like me) that its a combination of hardware, so its the luck of the draw, that said, seasonic has gotten much more claims about their platinum series having those issues, but i own seasonics and been flawless.

Any ideas of any slightly high wattage fanless power supply ? I am a bit concerned around future proofing since I could perhaps in the future get a more thirsty card like the 7950 plus stack the 2 SAS controllers with more disks.

The high end gfx cards top out at 225 to 250W TDP.

There's really no point in getting a fanless PSU when you have a rack of spinning drives..and then add a 250W graphics card into the mix. Just get a decent fanned PSU with a good rpm profile/quiet fan and quiet when you want quiet and quiter than your gfx card when running games. Lots to choose from. Seasonic gold and platinums, Kingwin LZP series, Corsair RM series, Be Quiet! Dark Power Pro 10.

Update : Got a bit of a bargain for a AMD FirePro W7000 ($300) - (I expect reasonable performance despite having it in a lower generation PCI-e slot) - it is not too power hungry at 150W tops with averages at around 100W.

By Steve's calculation this pushes me in the realms of 415W is this getting too close for comfort to still be going with the Super Flower 500W ?

Would it be safer getting a PSU around spec'ed at 600-650W. Since the Seasonic 660XP appears to have too high a chance of whining - any other safer ~600W options ?

By Steve's calculation this pushes me in the realms of 415W is this getting too close for comfort to still be going with the Super Flower 500W ?

Fanless PSUs are clearly going to get hot at higher power draws but this is less of an issue with Platinum rated units. According to jonnyGuru's review the Super Flower 500 can take 415W in its stride.

Update : Got a bit of a bargain for a AMD FirePro W7000 ($300) - (I expect reasonable performance despite having it in a lower generation PCI-e slot) - it is not too power hungry at 150W tops with averages at around 100W.

By Steve's calculation this pushes me in the realms of 415W is this getting too close for comfort to still be going with the Super Flower 500W ?

Would it be safer getting a PSU around spec'ed at 600-650W. Since the Seasonic 660XP appears to have too high a chance of whining - any other safer ~600W options ?

I beg your pardon, but I don't understand the need for a fanless (or very quiet) PSU with a W7000 GPU, an hot potato with a blower on it, so about 25-35dB of noise: you could use anything you want with such a card, as you won't ever hear it over that one.

By Steve's calculation this pushes me in the realms of 415W is this getting too close for comfort to still be going with the Super Flower 500W ?

Fanless PSUs are clearly going to get hot at higher power draws but this is less of an issue with Platinum rated units. According to jonnyGuru's review the Super Flower 500 can take 415W in its stride.

Thanks that's good to know. I might play it safe and go with the be Quiet 550W anyway.

Update : Got a bit of a bargain for a AMD FirePro W7000 ($300) - (I expect reasonable performance despite having it in a lower generation PCI-e slot) - it is not too power hungry at 150W tops with averages at around 100W.

By Steve's calculation this pushes me in the realms of 415W is this getting too close for comfort to still be going with the Super Flower 500W ?

Would it be safer getting a PSU around spec'ed at 600-650W. Since the Seasonic 660XP appears to have too high a chance of whining - any other safer ~600W options ?

I beg your pardon, but I don't understand the need for a fanless (or very quiet) PSU with a W7000 GPU, an hot potato with a blower on it, so about 25-35dB of noise: you could use anything you want with such a card, as you won't ever hear it over that one.

Thanks for letting me know I have not seen or heard this card yet. I guess I could always look for a passive /semi-passive quieter cooling solution - perhaps this would work:

Yes, the S1 Plus should work, maybe strapping a slow fan on it (a 500rpm Scythe may let you spare some headers).

For your PSU, I would pick the cheapest one among a Corsair RM650 and a Super Flower SF-550P14PE: if you may rather the Dark Power Pro 10 from beQuiet might be a good candidate also, as also the Enermax Platimax 600 is, where Super Flower and Enermax are perhaps the better built units among them. All those unites should be extremely quiet up to 400W load when bottom mounted, and I don't see any advantage using a fanless PSU instead.

Just wiring it up.... however.... there is no second 8-pin CPU power connector

The x8dal-6f mb needs the standard 24-pin and 2 8-pin connectors. There is an available pci-e however it doesn't fit - probably for good reason since its probably wired up differently and would fry something if tried.

Any idea what the kind of symptoms would be if the wrong type of power adapter here was used.Currently machine posts with 2 CPUs but bios is not able to detect all of the Ram.

I have got 6 x 8 GB RDIMMS however only 24 GB presented by bios.

Which power adapter did you use? Is it the two 4-pin molex to 8-pin EPS 12V one?

Anyway, I know for sure such an adapter works for a dual CPU setups: so at first glance you may either have a faulty component, or some incompatibility while using the two slightly different RAM DIMMs with that mobo; obviously also the PSU adapter cable and the PSU itself can either be the culprit, but maybe as a third and fourth option.

Are you able to boot with just one CPU (please try each of them) but inserted alternatively in either the two sockets, and just one DIMM? In such a condition, does each DIMM work? And are you currently able to boot with both the CPU inserted but just the two "slower" M393B1K70CH0 DIMMs (each of them in the very first DIMM socket of either the CPUs)?

Well.... I had tons of trouble getting one and ended up with a single SATA to EPS.I have an AKASA PCIe to EPS on order might be here this early week.

I think it is not safe, because the SATA connector can carry just up to 4.5A, so 54W at most. IMVHO you need the 10A supplied by a 4-pin molex (120W max), as a 6-pin PCI-E theoretically can carry up to 39 Amps but current ATX specs limits PCIe-PEG connectors to 6.25 A (75W), while a 8-pin PCI-E should double this limit.

quest_for_silence wrote:

However 3 DIMMS in P1 DIMM1 , P1 DIMM2 and P1 DIMM3 is not ok.

Also Just tried again Fast DIMM in P1 DIMM1 and P2 DIMM1 with 2 CPU is not ok.

AFAIK, when you populate all the triple channell DIMM sockets, the CPU power draw rise: so unless you have a better adapter cable than your current SATA-to-EPS, I think it isn't sound to perform such a test. It might be possible that even with just two DIMM channels per CPU the power draw from the SATA-to-EPS connector rise, but I don't know.

Is the motherboard able to boot with just 1 CPU and 1 CPU-power connector (the original 12V EPS one, I mean) inserted? Whether it boots in such a condition, what about booting it with two or three M393B1K70DH0-YH9 DIMM modules inserted? And then, what about mixing up the M393B1K70DH0-YH9 with the M393B1K70CH0-YH9 modules (I mean still with 1 CPU fed only by the original 8-pin 12V EPS connector)?

Ok new adapter arrived things are looking better..... Slightly.Seem to be able to get 2 CPUs working but only after taking everything out of the case. Not sure if there is some kind of shorting going on.

Running now with 2 CPUs however filling P1 DIMM1 and P2 DIMM2 with either type only getting 8 GB to show. This should be 8+8 = 16 GB.

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